Perhaps you should try some spelling variations:
"supply chain international efforts." » "supply chain international airports.", "supply chain international energy.", "supply chain international airport.", "supply china international efforts.", "supply can international efforts.", "supply sharing international efforts."
"supply grid integration series." » "supply grid integration theories.", "supply grid integrating services.", "supply grid integration schemes.", "supply trade integration series.", "supply _ integration series.", "supply data integration series.", "supply crowd integration series.", "support grid integration series."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply grid integration series.") OR ("supply chain international efforts."))~.
• Removing quotes may allow a broader search: (( supply grid integration series. ) or ( supply chain international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply grid integration series.") or ("supply chain international efforts."))*.